1991 wellcraft 196xl eclipse 4,000 rpms at wot

[theblob]

Just curios about what the rpm's should be on 305 mercruser it has 200hp motor.not forsure on prop size,and its a 19ft boat.does anyone know about what size gas tank are in these boats,because it has to be big.run for hour and half only used 1/10 tank.its running too cool think it needs a thermastat,only running 140.its poping a little through carb,so dont know if the running cool could cause that.after i tune it up ill know.just wondering about what rpm's should be around and size of tank in these boats.

 

[achris]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Engine serial number? ALWAYS need the engine serial number to look up anything to do with the engine....

If you post a drive problem, include the drive serial number (but in your case be VERY specific that although the drive serial number falls in the Gen II range, it is NOT a gen II)....

Chris.......

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

I found some similer boats with 58gal tank and 60gal and 50 gal not forsure.rpms should be around 4200-4800 if im not right let me know..is 40mph slow for 19ft deep v boat with 305.

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

I found some similer boats with 58gal tank and 60gal and 50 gal not forsure.rpms should be around 4200-4800 if im not right let me know..is 40mph slow for 19ft deep v boat with 305.

 

[Bondo]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

I found some similer boats with 58gal tank and 60gal and 50 gal not forsure.rpms should be around 4200-4800 if im not right let me know..is 40mph slow for 19ft deep v boat with 305.

Ayuh,... Ya got the rpms 'bout Right,...

40 ain't too bad,... what rpms,..??

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Its running 4,000 rpm's.would like to convert the old pionts system,while doing the tune up.its poping a little through carb at wot.got to be in the firing.my dad said he use to convert it over it the old days in cars,but forgot what all has to. Be done.i know any dibstribitor off small block chevy would work,but know marine suppose to have vented cap.what all would i have to do to convert.

 

[flipbro]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Listen to achris and these guys can help you out .Just saying!

 

[NHGuy]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

You need to use marine electrics, they are sparkproof, which keeps all your stuff and passengers from blowing up. So no car distributor or ignition. GEt a Delco EST if you do the marine conversion, or there may be a Pertronics that is marine and correct.
You want more rpms, like about 4600 or 4800 works best. So after you get the ignition tuned see what it does. And set the timing too.

 

[achris]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Its running 4,000 rpm's.would like to convert the old pionts system,while doing the tune up.its poping a little through carb at wot.got to be in the firing.my dad said he use to convert it over it the old days in cars,but forgot what all has to. Be done.i know any dibstribitor off small block chevy would work,but know marine suppose to have vented cap.what all would i have to do to convert.

As I have been asking you all along, Engine serial number. I looked up an old post where we FINALLY :facepalm: manage to extract it from you... (I have no idea why you are so reluctant to provide this vital piece of information????)

By your engine serial number, this is running Thunderbolt IV, and does not have points! Now, if it does, it means someone have removed the original distributor and fitted an old one.

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Engine serial number? ALWAYS need the engine serial number to look up anything to do with the engine....

If you post a drive problem, include the drive serial number (but in your case be VERY specific that although the drive serial number falls in the Gen II range, it is NOT a gen II)....

Chris.......

Your right about that.you know how many places said it was a gen2 and its not.the mechanic did the bellows,shift cable and gimble,but said the u-joints wasnt bad when i felt play in just one side.so now still making noise when turned to one side.still not bad for 370 for labor on bellows gimble bearing shift cable and trim limit switches and wires.i guess ill have to do the u-joints.would just one loose cap bearing cause it to make that clicking like sound when only turned at high rpm's?it felt really tight where axle went into drive.just wondering if something else.

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Here's numbers engine od444866 drive is od486378 and transom od479865 hope that helps i really didnt pay alot attention to distribitor just looked small so thought it had pionts.not forsure now.motor was rebuilt,so im not forsure what all was done.i know we had two other older boats that had the thunderbolt around 86 model.this one just didnt look like it.

 

[achris]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Clicking sound is a uni.... Any place that says it's a Gen II is not using the proper Merc parts program. Here is a screen-grab you can print out and take with you if anyone questions it.... However, we still need the serial number from the engine (which makes no difference gen II or not, whenever you post)....

This screen-grab is from the genuine, Mercury supplied, parts look up program. Clearly indicates your serial number, the model number and the fact that it is an Alpha One, NOT gen II.... (good luck)

But please, whenever you start a new thread, include the serial numbers. Anyone that says Gen II, just ignore them...

 

[achris]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Here's numbers engine od444866 drive is od486378 and transom od479865 hope that helps i really didnt pay alot attention to distribitor just looked small so thought it had pionts.not forsure now.motor was rebuilt,so im not forsure what all was done.i know we had two other older boats that had the thunderbolt around 86 model.this one just didnt look like it.

Take the cap off and have a look. Then post a photograph... If it's an automotive dissy, it's got to go!

Chris...

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

I just been so busy had to put two freeze plugs in truck.then had to put another in the boat.the one in boat just popped out running cold.hope no more pops out after putting new thermastat in.140 is cool either it is stuck open or dont have one.i really only want around 4500 rpms after tweeking,because i know them 305's wont hang verywell.like the 350's.gets good gas mileage and dont rev as high as that 4.3 we had in the bayliner.hoping for 45mph with 4 people.it has brand new carb.probly wasnt adjusted.if anyone knows the turns out on carb let me know.i thought it was like 2 1/2.i havent read none of the manuals my dad has them.so if it does have thunderbolt maybe a thermastat will help alot with peak performance at around 180 temp.ill clean plugs and put new wires,plugs probly look new.

 

[achris]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Primary setting for the idle mixture screw is 1-1/4 turns....

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Primary setting for the idle mixture screw is 1-1/4 turns....

Ok my dads looking in book now.i know thats just basic setting still gotta run it and adjust.thanks.

 

[achris]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

.....i really only want around 4500 rpms after tweeking,because i know them 305's wont hang verywell.like the 350's.....

Max recommended rev for your engine are 4200-4600rpm at WOT...

Who said the 305 won't 'hang as well as a 350'??? The only difference between a 305 and a 350 is the bore. Both engine use the same basic block (just bored a bit more for the 350), the same crank, very similar heads, the same camshaft and all the valve gear, flywheel, water pump, starter and carburetor. Anything the 350 can do, the 305 can too, just a bit less power (mind you, the new MPI 305s are making the same power as a 350 with a 4bbL)...

Chris.....

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

I know in a car alot of the 305's are about done around 140,000 miles and 350 will go 300,000 miles.dont get it why they dont last.maybe thier different in boats.something has to cause them not to last as long as the 350's.

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

Im thinking they use stronger performance stuff in 350's.i know if you put 305 heads on 350 you get more compression.

 

[theblob]

Re: 1991 wellcraft 196xl eclipse 4,000 rpms at wot

I wonder if they put better performance oil pump in the 350's.